Ribbon-spool.



M. J. CLA BBY & W. H. FALLON.

' RIBBON SPOOL. APPLICATION nuab nzc. 18.1914.

LM,& 1 Patented July 13, 1915,

WWNE55E5= I ImvsmTnRa..-

" w- MW v @EWAT TBHNEY aerate Parana? otters MICHAEL J. 'cLABBY ANDWILLIAM H. FALLON, on muncnron'r, CONNECTICUT, ASSIGNORS 1'0 REMINGTONTYPEWRITEE COMPANY, or ILION, NEW Your, a

CORPORATION OF NEW YORK.

RIBBON7SPOOL.

nectar.

Specification of Letters Patent.

Patented July 13,- 19115..

Application filed December 18,1914. Serial No. 877,957. 7

lug machines, and in the art or method of making the ribbon-cores, orhubs of the spools, the main objects of the invention being tofacilitatethe construction of ribbon spools, to reduce their weight, andconsequently the expense of handling and transporting them, the effortrequired to actuate them in machines, and the wear to which theiroperationsubjectsother parts of the ribbon mechanism, and to render themcheaper than ribbon-spools now commonly used, I

The invention consists in the features of construction of the spool andits hub and in the method of making the same, all as hereinafterdescribed and set forth in the appended claims.

On the accompanying sheet of drawings, on whlch like reference numeralsdesignate like parts of different v1ew's,'F1gure 1 1s an end view of aribbonspool made by said method and embodying said features ofconstruction, its hub being tubular and includ ing a spindle-tube; Fig.2, an edge View thereof; Fig. 3, a face view of one of the heads of thespool; Fig. 4, a cross-sectionof the spool on the plane indicated by theline :0, m, Fig. 1; Fig. 5, an end view of the hub Fig. 6, alongitudinal section thereof on the plane y, 3 Fig. 5; Fig. 7, a sideView of the hubjFig. 8, a plan of a blank from which the hub is formedby bending operations to which the blankis subjected; Fig. 9, an edgeview of the blank at'the end of the firstbending operation; Fig. 10, anedge view thereof at the end ofthe second bending ope'ration, this beingalso an end View of the completed spindle-tube; and Fig. 11, an edgeview thereof at the end of the third bending operation, this being alsoan end view of the completed spindle-tube and of the nearly completedhub.

The blank (Fig.8) isthin, flat, and oblong, and is preferably softsteel. On the longitudinal edges of its central portion 1, are theprongs 2, and in this portion are the two oblong perforations 8, nearits ends, and the round .perforation l, midway between the endsandbetween the longitudinal edges of the blank. In the terminal por-'tions 5 of the blank are the perforations 6, which are separated by thenarrow strips 7 from the perforation 3, these strips being at the endsof the central portion and at the inner ends of the terminal portions.The form of the blank and the arrangement of its features are such thatit is divisible into two equal parts either by a-longitudinal section ora cross section, on a plane which contains a diameter of the perforation4, and, consequently, when it is subjected to the series of bendingoperations to be described it does notmattcr at all which face of theblank is upward or which of its ends is its right or left end. Some ofthe tools" used in the bending operation have pilot pins which enter theperforation 4 and so help to locate the blank in the proper position.

The blank is converted into the form illustrated in Figs. 5, 6 and 7 byfour bending operations. -The spindle-tube 8, having at its ends theprongs .2, isformed from that part of the central portion of the blank"which extends from one of the perforations 3 to the other, and the outerportion or drum of the hub, composed of the semi-cylindrical parts 9, isformed'from the terminal portions 5 of the blank. The drum andspindletube are united by the strips 7 and by the stock 10 at the endsof these strips and at the ends of the perforations'3. The perforations.6 become circumferential, lateral openings in the hub, which areseparated by the strips 7, and these'strips become crossbars, or adouble cross-bar, to be engaged by a hook or similar device attached toa ribbon. The spindle-tube and the bar or bars 7 may be regarded asparts of internal extensions formed on the semi-cylindrical parts ordrum of the hub.

By the first bending operation the blank is bent near its ends andmidway between them, so that the drum is partly formed from its terminalportions 5, and the spindle-tube from, its central portion has appearsby Fig. 9. The second bending opera- -tion completes the spindle-tube8'.(Fig. 10).

3O 1 outwardly bent prongs that the hub and In the third bendingoperation (Fig. 11) short bends 11 are made at the intersections of thecentral and terminal portions, so that at the end of this operation thespindle-tube is nearly surrounded by the curved terminal portions, thecurvature of which is somewhat greater than that of the semi-cylindricalparts of the completed hub. The fourth operation further bends thecurved terminal portions, so that they are converted. into thesemi-cylinders 9, and forces them together end of the drum will snuglyfit. The prongs 2 on the ends of the spindle-tube fit in the recesses 14and project through the heads and are'bent outward against their outerfaces, and the ends of the drum are confined in the hollow beads 15.lhose portions of each end'of the spindle-tube which are between theprongs rest against the inner side of the adjacent head and so co-actwith the head are firmly secured together, and the inner surface of thespindle-tube is even with those portions of the edge of the perforation13 which are between the recesses 14, The construction of the hub andthe arrangement of the prongs 2, recesses 14 and beads 15 are such thatthe heads may be alike, and either head and either end of the hub may befastened together as described.

' When the ribbon-spool is in use, the spindle on which it is mountedextends through disposed neck-portions marked 10.

the perforation 13 in one of the heads of the spool and intothespindle-tube 8, and a pin which forms part of the spool-turningmechanism fits in the hole 16 in the head of the spool. Since thediameter of the perforations 13 is equal to the internal diameter of thespindle-tube, aspindle which fits in either of these perforations willfit in the spindle-tube as an axle fits in the hub of a wagon wheel andwill prevent the spool from tipping or wabbling even if the spindle doesnot extend entirelythrough it.

The finished core or spool hub comprises a central split tubular portion8 adapted to be fitted upon the spindle of the ribbon mechanism of atypewriting machine, and an outer concentric split tubular portion madeintegral with the center tubular portion and upon which the inkingribbon is adapted to be wound or coiled. These two concentric tubularportions are connected by radially The outer tubular portion is formedofhalf sectween the free terminal ends of the outer tubular portion, andalsoaspace between the outer ends of the neck portions or at the pointswhere the roots of the outer half tubular portions join the neckportions, and also a space between the longitudinal split edges of theinner tubular portion, it will be understood that all these spaces arenot necessary, and that the respective parts referred to may all bebrought into actual contact or in closer relationship than shown. Inthe'finished article it will also be observed that tl.;- openings 3,3 ofthe blank extend longitudinally of thehub and coincide or register, andthat the openings 6, 6 in the blank extend circumferentially of thefinished hub in opposite directions from the cross bars 7, 7 which arebrought into'parallelism and into register by the folding operationsabove described. The openings 6, 6 permit the'hook on the ribbon to bepassed I through either opening and thence through the openings 3 Withwhich they communicate to encircle or partially encircle the cross Ibars 7, thus forming a ready, convenient and effective meansof'attaching the ribbon to the spool and of detaching it therefrom.

Hubs like that shown may be made in the method described by hand, withthe aid of simple metal-bending tools, or by machinery comprisingbending and forming dies and not requiring attention. by highly .skilledworkmen, and such machinery has been devised for and is in use in thepractice of the method in the manufacture of hubs in large quantitiesand at low cost.

The principle of. the invention does not depend on all of the details ofthe construction and method described, and will not be affected byvarious modifications which may be made in them. V What we claim as newand desire to secure by Letters Patent, is

2. A spool comprising a tubular drum and I a spindle-tube surroundedthereby, both being formed in one piece from sheet metal, the heads ofthe spool having perforations therein with recesses at their edges, andthe spindle-tube having prongs which fit in the recesses and engage theheads, portionsof the ends of the spindle-tube being in contact with theinner faces of the heads close to the/perforations, and the innersurface of that tube being even with the portions of the edge'of eachperforation which are be tween the prongs. I

3. A spool comprising a tubular drum and a spindle-tube surroundedthereby, the drum consisting of two semi-cylindrical parts, those partshaving internal extensions and the spindle-tube forming a part of thoseextensions, and the drum having in it lateral openings separated by across bar formed by parts of those eietensions.

' l. A spool comprising a tubular drum and a spindle-tubesurroundedthereby, the drum consisting of two semi cylindrical parts, those partshavinginternal extensions and the spindletube forming a part of thoseextensions and having at its: ends prongs which project through and arefastened in the heads of the spool, and the drum having in it lateralopenings separated by a cross bar formed by parts of those extensions.

5. A spool, the hub of Which comprises a center split tube, neckportions extending radially outward from the meeting edges of said splittube, and an outer split tube composed of half sections extending inopposite directions around the Icenter tube from the outer ends of saidneck portions.-

(S. A spool comprising a split tubular center, neck portions extendingoutwardly from or openings;

the meeting edges of said center, said neck portions having each a slotor opening and a cross bar, and an exterior tubular portion providedwith circumferential slots or open ings communicating with the aforesaidslots 7. A spool comprising a split tubular center, neck portionsextending outwardly from the meeting edges of said center, said neckportions having each a slot or opening and a cross bar, and a concentrictubular split portion formed of half sections, the roots of which joinor spring from the outer edges of the neck portions, said half sectionsextending therefrom in opposite directions to encircle the centertubular portion andeach said half section having a slot or openingcommunicating with the slots or openings in the neck portions. 1

8. A spool consistin-gof two heads o flanges and a sheet metalcore orhub, the latter comprising a central split tube provided at each endwith ears or lugs passed through recesses in the heads or flanges andbent over thereupon, and an outer concentric split tube connected to theinner tube by neck portions, said neck portions having slots or openingsand a cross bar, and said outer tubular portion having circumferentialslots or openings.

9. A spool. having a spindle receiving portion, a" neck portion havingan opening, a

ribbon supporting portion having an openfrom blanks of sheet metal whichconsists first of forming from the central portion of each blank, atubular portion and neck-like extensions from said tubular portion, andthen forming a concentric tubular portion by bending the terminalportions of the blank circularly in opposite directions from said neckportions.

12. The method described of forming a tubular drum and spindle-tube, ofa spool,

in one piece from sheet metal, the method consisting in first bending anoblong blank near its ends and midway between them and thereby partlyforming the drum from the terminal portions and the spindle-tube fromthe central portion of the blank, then completing the formation of thespindle-tube by further bending the central portion of the blank, thenmaking short bends-at the ends of the central portion, and thencompleting the drum by further bending the terminal portions intosemi-cylinders and forcing them together around the spindle-tube.

Signed at Bridgeport, in the'county of Fairfield, and Stateof'Connecticut, this 16 day of December A. D. 191%.

' MICHAEL J. CLABBY. WILLIAM H. FALLQN.

Witnesses:

E. M. TUTTLE, M. Cones.

